Engine head



May 11 1926.

Q. E. BARTHl-:L

ENGINE HEAD Filed August 9. 1922 2 Sheets-Sheet 1 NNH l' May 11 192s. l l 1,584,003

A O. E. BARTHEL ENGINE 11E-AD Filed August 9. 1922 a sheets-sheet a Y Patented May 1l, 1926.

PATENT OFFICE.

OLIVER E. BARTHEL, 0F DETROIT, MICHIGAN.

ENGINE HEAD.

Application med August 9, 1922. Serial No. 580,596.

This invention relates to a cylinder head for air cooled engines, and has special reference to a cylinder head vthat may be cast in block form `and advantageously used on a multiplicity of cylinders inclosed so as to receive a blast of air from a motor driven fan, fly wheel or the like or air that may imf pinge against and pass through a radiator of an automobile or other vehicle equipped with an air cooled engine and cylinder head in accordance with this invention.

One of the objects of my invention is to provide a cylinder head with a fuel intake gallery or chamber which permits of an incoming charge of fuel to cool the engine head, the gallery or chamber having a single entry with a continuous flow of fuel in diverging direction therein and by having exhaust chambers extending through the intake gallery or chamber, the incoming charge of fuel will have a cooling effect on the ex-` haust chambers. 1

Another object of this invention is to provide an engine head with an intake gallery or chamber in which heavy particles of an explosive `mixture may be vaporized and placed in a better condition for combustion, the intake gallery or chamber being subj ected to heat by conduction and walls of the gallery or chamber are shaped to cause any fuel condensate to drain away from the intake ports and'allowffor revaporization A further object of this invention is to furnish a cast cylinder head with ire and heat resisting linserts adapted to increase the` longevity of the head and afford valve seat members which will insure a positive seating of intake and exhaust valves associated with the head.

A still further object of this invention is to furnish a cast cylinder head with heat disseminating ribs or vanes, some of which are integral with the head and others of which are anchored in the head during the casting thereof.

The above are a few of the objects obtained by a mechanical construction to be hereinafter described, and reference will now be had to the drawings, wherein Figure'l is a top plan of the engine head;

Fig. 2 `is a side elevation of the head, partly in section;

Fig. 3 is a bottom plan of the head;

Fig. 4 is a horizontal sectional view taken on the line IV-IV of Fig. 2;

Fig. 5 is an end view of the cylinder head as applied to an air cooled engine; i

Fig. 6 is an enlarged end view of the engine head;

Fig. 7 is an enlarged cross sectional view of the engine head taken on the line VII-VII of Fig. 1;

Fig. V8 is a similar view taken on the line VIII-VIII of Fig. 1,

Fig. 9 is a similar view taken on the line Fig. 1() is a detail sectional view of a portion of a water cooled engine showing a driven fan for forcing air downwardly between the engine cylinders.

The engine cylinder head is cast en bloc to form an oblong intake gallery or cham ber 1 having a bottom wall 2, a top Wall 3, and side and end walls 4i. The length of the chamber depends upon the number of cylinders to be served thereby.

AThe chamber bottom wall 2 has its lower face formed with depending cylindrical combustion chambers 5 corresponding in number to the cylinders on which the head is mounted, for instance a six cylinder engine, and the lower edges of the `combustion chambers 5 have lateral apertured flanges G 'by which the head may be` bolted or otherwise firmly secured to a cylinder block.V a5

The spaced combustion chambers 5 are connected by flanged webs 7 forming air ducts or passages 8 communicating with casings 9 in the chambers 1,`said casings connecting the walls 2 and 3 to form vertical air ducts or passages through thechamber 1, said casings having the upper and lower ends thereof open at the walls 2 and 3, so that air may pass downwardly through the engine head and between cylinders 10 of an air cooled engine 11. l

At one side of the cylinder head the combustion chambers 5 have lateral openings or sockets 12 for spark plugs, and fixed in the top of each combustion chamber 5, are metallic inserts 13 in the form of disks, each having a Vpair of valve seat openings 14 and 15 for intake and exhaust valves. These metallic inserts are made of a high heat resisting material of a more indurate nature than the metal from which the cylinder head is cast, and said metallic inserts are of a greater diameter than the combustion chambers 5 so that the marginal edges of theinserts may be anchoredand made integral Vwith the head during the castingthereofi The intake valve seat openings 14 come municate with openings 16 in they bottoni wall 2 of the chamber 1 and said chan'iber, intermediate its ends, has -another bottom` wall opening 1.7 conununicating with a fuel intake connection 18,be`stshown-in'Fig. 9, said fuel intake connection'being between two of thecon'ibustion' chambers 5. rllhis fuel intakel connection 18 may be suitably connectedfto acarburetervto supply vaporized fuel to the gallery or chamber 1 and from this gallery or chamber the vaporized fuel is adapted to vpass through the openings 16 and 14`into the combustion chambers 5,`

when the intake val-ves are'opened.. y

The topwall 3 of the gallery or chamber 1- has valve rod guides 19 coaxialof the openings 14 and 16 foroverhead valve-rods 20, which as shown in Fig. 5, maybe actuated by rockers'21 supported by brackets 22 at tached to apertured bosses 23 on ay side wall 4 of the head, preferably the intake side of said head.

The exhaust valve seat openings com- A inunicate with openings 24 in the chamber wall 2 and with angularly disposed exhaust conduits 25 extending through the chamber 1 and terminating in .large tubular bosses'y 26 on the chamber wall 3 and to which an exhaust manifold 27 may be suitably connected. The tubular bosses 26 include valve rod guides -28 coaxial of the exhaust valve seat openings 15. i

.In the gallery or chamber 1 are a multiplicity of tubular bosses 30, some of which adjoin the lcasings .9 and others adjoin the side and end walls 4 of the chamber'. These bosses are disposed co-axially. of similar i bosses 31 on the top wall 3 of theA chamber 1 and bosses 32 connecting the bottoni'wall 2 of the chamber to the apertured flanges 6 of the combustion chambers 5, thus permitting.

ofV screw boltsor nut equipped bolts being used to fix the headrelative to the cylinders 10.

' On the top wall Sof the lgallery or chamber 1 are longitudinally,disposed parallel heat disseminating vanes or ribs 38, some of which extend over the upper open ends of the casings 9, others connecting tubular bosses andvalve rod guides on the wall 3,

and other vanes orribs being of less 'depth than the remaining vanes or ribs, as best shown in Figs. 6yk and 8f, ,so that connections can be easily made with the tubular exhaust bosses 26; d K

The wall 4 of the' gallery or chamberl, at the spark plug side of said head, may be provided with vane or rib inserts 34 dis posed in parallelism and preferably made of aluminum, said inserts being anchored and made integral with the wall 4 during the casting thereof.

The air cooled engine 11 has a hood or c-a'sing` 'provided with a horizont-al partition 36 supporting sleeves 37 about the cylinders 10 of the engine. The partition 36 cooperates with the hood in forming a longitudinal passage 38 aboutthe cylinderhead and this passage may be connected toa radiator receiving a blastofairv or the passage 38 may receive a blast' of airy from a fan or ily wheel. In eithervinstance", such blasty of air inipinges against the cylinder head andthe vanes or ribs thereof to carry ofi' such heat as may be radiated from the cylinder head. The lair will enter the casings 9 and ducts 8 and pass downwardly between the cylinders 10 of .they engine, these cylinders being provided with fins or vanes as indica-ted iu Fig. 5. The airt also passes through' the sleeves 37, and circulates within the lower' part of the hood due to the action of the engine fly wheel in said hood or at one end thereof. y

As a further instanceof means contributing towards the circulation of air about the engine cylinders, I show in 10 a horizontally dispose'dfan 40 mounted on the vertically disposed fan'shaft41 having a' Reference will againbe had toFigs. I4, 7

and 9 showing the upper face of the chamber bottom wall y2 'to have alongitudinal central ridge orv'surface slanting. towards the side walls 4. Any unvaporized fuel or condensate withinV the gallery or chamber 1 will eventually accumulate on the bottom wall 2 and since this all is subjectedto heat,

- by` conduction from.y the cylinder block, the

liquid fuel will bevap'orized before it is carried out of the gallery or chamber int-o the combustion chambers v5.4 Because ofthe exhaust conduits 25 extending through the galleryY or chamber 1 it is obvious that incoming vaporized fuel'will impinge' against the` walls oflthese conduits be heated, and

Aplaced in betterr conditionffor ydeterioration inI the combustion chambersy 5 by vspark plugs extending therein', and'while the cylinder head isprimari'ly designed as va heater for vaporized fuel, yetfi't` `'serves for' disseminating heat and may be readily cooled in connection with an engine of the air cooled type.

It is thought that the utility of the cylinder head will be apparent without further description7 and while in the drawings there is illustrated a preferred en'ibodin'ient of my invention, desire it to be understood that the cylinder head may be modified for use on air cooled engines other than that diagrammatically shown. furthermore, that my invention is not limited. other than de lined by the appended claims.

That 'l claim is :fd

l. An engine head for a six cylinder cngine, said head havingT combustion chambers therein for the engine cylinders and a fuel chamber in a plane above said combustion chambers with the bottom wall of said fuel chamber ported to communicate with said combustion chambers, exhaust conduits eX- tending fromy the bottom wall of said fuel chamber to the top wall of said fuel chamber and the bottom wall of said fuel chamber inclined downwardly and outwardly from its longitudinal middle portion to cause any liquid fuel to drain to opposite sides of said fuel chamber, said exhaust conduits and the ports thereof being in a central longitudinal plane of said head, and a fuel intake connection for said fuel chamber.

2. A n engine head ascalled for in claim l, wherein said fuel intake connection is in v the horizontal. plane of said combustion chambers and communicates with said fuel chamber at t-he bottom wall thereof and between the centralmost combustion chambers,

3. An engine head as called for in claim 1, and air passage casings between the endmost pairs of combustion chambers and eX? tending through said fuel chamber.

In testimony whereof I afliX my signature. OLIVER E. BARTHEL. 

